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Plunger Valve Valve VAG

Externally controlled control valve with annular flow cross-section for the continuous regulation of high pressure differences and flow rates. Long service life as the bearings do not come into contact with the medium. Wear-resistant, corrosion- and infiltration-proof guide rails due to hard-facing. This ensures low operating forces and prevents jamming of the piston. Suitable for use in water treatment, water distribution, in dams, power plants, industry and in pressure management.

Product features and benefits

  • Face-to-face length acc. to EN 558-1, basic series 15 - from DN 500 1.5 x DN
  • With flange ends on both sides acc. to EN 1092-2
  • Control valve in straightway type
  • With customized control device depending on operating conditions
  • Low actuating torque due to pressure balanced valve piston
  • Rotationally symmetrical flow guidance
  • Annular flow cross section in each position
  • Axial movement of the plunger by means of crank gear mechanism
  • With self-locking worm gear unit including position indicator
  • Elastic profile sealing ring located in the no-flow zone for high durability
  • Wear-resistant, corrosion-resistant and infiltration-proof piston guides in the body by micro-finished bronze weld overlay


  • Body: Ductile cast iron EN-JS 1030 (GGG-40)
  • Piston guide rails: Bronze overlay welded
  • Piston: Stainless steel 1.4301 Operation data
  • Valve sealing: EPDM
  • Inner parts: Stainless steel (exception: > DN 600 crank gear from EN-JS 1030 (GGG-40))
  • Bolts: Stainless steel A4 (DIN EN ISO 3506)
  • Bearing bush: Bronze
  • Eye bolts for lifting: Galvanized steel 1.0401 (C15)

Corrosion protection

  • Inside and outside epoxy coating